Boiler cleaner



Jan. 17, 1933. N. 1.. sNoW ET AL BOILER CLEANER Filed Feb. 2, 1927 4 Sheets-Sheet 1 Inueni'ors:

.Norman L, Snozv, .Willis R Thomaq,

M Wm

' Attys.

Jan. 17, 1933. SNOW ET AL 1,894,297

BOILER CLEANER Filed Feb. 2, 1927 4 Sheets-Sheet 2 I nuen Z'ors: JYbrman L. Shaw,

. Wil s R 7720172 as, i

Wil v M Au s.

Jan. 17, 1933.- N. L. SNOWET AL BOILER CLEANER 4 Sheets-Shee t 3 Filed Feb. 2. 1927 M m d f n3 QN O I aw AN Nu 5w 2 SQ N N C m 1 H |1i| am r 2 w H MN 3 m k w ANN m hNN 4 Sheets-Sheet 4 Jan. 17, 1933. N. SNOW ET AL BOILER CLEANER Filed Feb. 2, 1 927 m J NN l fl O 0 J 8 m w n p 1 l1 n u EH mmw r Q 8Q I L QNN WMN 4 MMN bNN m s m: r 7 M Patented Jan. 17, 19 33 UNITED STATES PATENT OFFICE.

TROIT, MICHIGAN, ASSIGNORS TO" DIAMOND PSI/VER- SPECIALTY GORPORATIOIN, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN BOILER CLEANER v Application filed. February 2, 1927. Serial No. 165,480.

This invention is directed to an improvement in boiler cleaners, more particularly to means for removing from the interior of a boiler setting, accumulations'of fuelash and the like. 1 n

Figure 1 is a semi-diagrammatic side view in section taken through a boiler of the hori' zontal tube type, showing one form of our invention applied thereto;

Figure 1a is a side "elevation showing our invention in applied position,

Figure 2 is a view similar to Figure 1, showing a modified bafileconstruction;

Figure 3 is a view similar to Figure'2, but showing a further form of our inventionap plied to remove deposits from the horizontal battle of the boiler;

Figure 4 is a fragmentary plan view of the form of apparatus shown in Figure 3, the devicebeing shown in its extended position;

Figure 5 is 'a view in longitudinal section of the ash removing means shown inFigures 1 and 2;

Figure 5a is a side view of the tion of the cleaner element; V I

Figure 6 is a'section along line 6-6 of Figure5;. i

Figure 7 is a longitudinal section similar to Figure 5, but showing a still further modi- 0 fication of our invention;

Figure 8 is a section taken along the line 88 of Figure 7;

Figure 9 is a horizontal sectional view' of the form of our invention shown in Figures 3 and 4;

Figure 10 is a vertical sectional view showing a still further modification of our invention similar in its general form, to that shown in Figure 9. p

In Figure 1, the boiler A is shown mounted in the setting B above the combustion chamber C. The tube bank in this boiler consists of tubes D extending between headers E and E and provided with the vertical bafl'les F and F and'the inclined baffle G toso direct the flow of gases from the combustion chamber that proper contact'thereof. with the. boiler tubes, D is secured. For cleaning the accumulations of ash and the like, which form upon the inclined bafile G, we have proash may end poi vided the injector cleaner apparatus 1, a construction which will be hereinafter more fully explained. In order to" move the accumulationslying on the bafiles so that they can readily be'reached by the injector cleaner, we have provided the supplementary blower pipe 3 located conveniently adjacent the junction of the inclined balile G and the vertical baffle F. Thisblower pipe is provided with nozzles 5 from which steam or other suitable'fluid, supplied tothe blower 4, maybe dispipe through the supply pipe charged along the baffle.

In Figure 2, the baffle Gis shown provided may accumulate and from which pocket the bereadily removed by the injector unit. I

' In the form injector unit or" different constructionds shown. In this case, the unit 80, provided with thepipe 105 through which the ash ac-r cuniulations are carried ofi, is shown mounted in the wall B ofthe boiler setting. It

is made up of sections telescopicallyarranged as shown, which are adapted to extend the unit so that it may sweep over any part of the baliie G; for'instance, it may be extended as shown in Figure 4, to a point closely adja' cent the opposite wall B of theboiler setting. I 1 5 f In all tor'msof this invention, the'ash accumulations are removed by theapplication of suction which may be conveniently produced by the injector action of a discharging jet of steam, or the like. In the formshown, in

'Figure 5, steam orthe like fluid, is supplied shown in Figures 3 and 4, an-

through the pipe are the operating head 20.

This operatinghead 20-may be conveniently mounted from the flange 35 .ofthe Tfitting 30. The stud 34 mounted in the flange 35- I passes through thehousing 81.

In this hous and mounted upon the cap screw 34 is the spring 32, the tension of which may be 30, the plate being held. in placeby means of the spring 86. The operating head is in this manner supported from the T-fitting 30. The opposite end of this T-fitting is provided with flange 37 fastened as by bolts to flange 38, in which latter flange, the pipe 29 is threaded. This pipe 29 extends adjacent the accumulations of ash which it is desired to remove and is provided with a series of slots 29a through which the ash may be drawn.

The operating head is provided with sheave wheel 6 fixed to shaft 7, the small pinion 8 being likewise fixed to this shaft and adapted to be rotated therewith when the sheave wheel is operated. Thispinion 8 engages the gear 9 which is fixed as by set-screw 11 to the tube 10.. This tubelO is ournalled in the head 12, the packing gland 14 and packing' 13 serving to make a steam-tight connection therein.

Thus, upon rotation of the sheave wheel 6, the tube 10-is caused to rotate.

The valve '18 in cooperation with the valve.

seat 19', controls the flow of steam from the supply pipe 2 through the channel 20a,

I through tube 10 and thence to the discharge nozzles 25. This valve may be conveniently actuated bythe same means used to rotate the tube 10. The cam 15 fixed to the gear wheel 9 by bolts 15a is adapted to depress the trigger 16 when the large gear 9 is rotated. The

trigger, in turn, depresses valve stem 17, causing the valve 18 to move downwardly from its seat 19, thus permitting steam to pass from the pipe 2 to the channel 20a. It is obvious that the valve maybe kept in this open condition any desired length of time, depending upon the degree of contact of the cam 15 with the trigger 16. When the trigger 16 passed off the cam 15, the spring 21 mounted underneath the spring clip 21a, which spring clip is in turn fastened to the valve stem 17, will return the valve to the closed position. The operating head thus provides means to rotate the tube 10 and to control the supply of steam or the like to the nozzles in timed relation to the rotation of the said tube.

This tube 10 is provided at its outward end with .t'hereducing fitting 22 in which is threaded the pipe 23. On the end of this pipe 23,- is mounted the nozzle head 24 provided with the nozzles 25:. Thesenozzles as in'di cated, discharge alongthe axis of the tube 28 towardthe outlet end of this tube. By the discharge of steam from these nozzles 25, a

;; powerful suction may be created on the interior of the pipe 28,which will pull the ac cumulations of ash and the like, through the slots 29a through the T-fitting 30 and out through a suitable exhaust pipe' ll. This exhaust pipe 41, as shown, may be provided with aflange 40, bolted to the lower flange 39 of the T-fitti'ng 30. I In order'to control the degree of opening of the slots 29a in the pipe 20., to insure a' periodic suction through this pipe, we have provided an inner tube 28 adapted to rotate within the tube 29, within which tube it fits snugly. This tube 28 is provided with a series of slots 28a arranged spirally of the tube, so that upon rotation of thetube successive portions of the slots 29a in tube 29 may be ported to the interior of tube 28.

To rotate this tube 28, we have provided the spider 26 fixed as by welding to the tube 28. This spider is made up as shown in detail in Figure 6 and consists of the hub 26a fixed upon the tube 23. The spaces 260 are provided between the ribs 266 whereby the ash may readily pass from the pipe 28 to the T-fitting 30. These ribs 26?) extending outwardly fromthe hub 26a may be fitted in notches 280 out in the pipe 28. Asan addi- 23 through the spider 26. Tube23 as before described, is rotated from the sheave wheel 6 which also controls the supply of'steam from the supply pipe 2 to the injector nozzle 25. We have thus provided a cominonineans for controlling thedegree of opening in the suction pipe 29 and for controlling the supply of steam or the like, to the injector nozzles 25. This means also controlsthe supply of steam or the liketo nozzles 5 through pipe 4 which communicates with head 20 in the.

manner shown in Figures l and 2. p e V 1n the construction shown in Figure 7, the

outer suction pipe isadapted to extend through the boiler wall B adjacent the accumulations which it is desired to remove. This pipe is closed at Its, outwardv end at 53 and is provided with the series of ports 52a, 52b and 520, arranged in staggered. relationaround the pipe as shown; Inthisin= stance, the inner tube 59 provided with the ports 60a,.60b, arranged inv a straight row as shown, is mounted fixedly in the h fitting 58. This L-fitting 58 is attachedto the brack et fixedby studs 55a to the outside of the boilerwall. The connection between thisL- fitting and bracket may conveniently be by means of the flanges 541 and 59a, which are joined by the bolts 5'Zas shown. The inner tube '59 may bet-breaded as at 56fto the'L- fitting 58. In this case, the outer pipe 50 may be rotated by means of a wheel61 fixed thereto by means of a set-screw 61a passing through the hub of the wheel. The hand wheel 61 thus provides'means to rotate the outer ported tube 50 and thus control the opening of the ports 60, a, etc, in the inner stationary tube 59. are shown as .inountedin the wall box 51 passing through an opening in theboiler wall B In the Lefitting 58' is provided a steam The concentric tubes discharge nozzle 66 adapted to discharge along the longitudinal axis 'of the exhaust pipe 64. This nozzle 66 may be supplied with gitudinally to extender withdraw the suction steam or the like through the pipe 66a rotatably' passing through the packing gland 67 mounted in the boss 67a of the L-fitting 58. This pipe 66a is joined by swivel 68 to the stationary supply pipe 69. Control of steam to the injector nozzle is accomplished by means of the valve 7 O in the stationary supply line.

The discharge of steam from the nozzle '66 along the axis of the exhaust pipe .64 creates a suction through the L-fitting 58 pulling in the ash accumulations through whatever of the ports 600;,606, etc, are in register with the ports 52a, 52b, 520,etc. It frequently happens that these ports become clogged with accumulations of ash and the like and it thus becomes desirable to provide means whereby they may be readily cleaned when desired. This can be most'conveiiiently' accomplished by a discharge of steam or the like through the pipe 59 and through the ports. To accomplish this, we have providedthe handle 71 fixed to the supply pipe 66a, in which supply.

pipe the nozzle is mounted. By oscillating this handle, the steam discharge nozzle 66 may be swung through ninety degrees to the position shown in dotted lines in Figure 7. The discharge of steam will thus be longitudinally of the pipe 59 and through the registering ports as 60?) and 525, which ports may thus be clearedof any accumulations.

Tn order to increase the force ofthe steam through the pipe 59, we may provide in the exhaust pipe 64:, the slide member 65. Thus,

when thesteam is discharged into pipe 59, the slide 65 may be closed to preventthe escape of steam from the discharge pipe 64, thus aiding in the removal of accumulations of ash or the like fromthe ports of the suction tubes by maintaining a suitable pressure in the pipe 59.

' Describing now the form shown in Figure 9, 81 is an extended suction fitting provided with the inlet 82 and adapted in the operation of the device to move over the surface of the baflleG. As showniin Figures?) and 1, this device is mounted in the wallofthe boiler setting and is adapted to be projected by any suitable means to sweep over the surface'of the baflie. The means to extend the device will now be described. The sheave wheel 89 is fixed to the tube 91 andcan be rotated in any suitable manner. Fixed to this same tube 91 is the sprocket wheel 96, which with the sprocket chain 97, is adapted to rotate the sprocket wheel 96a and the tube 91a. Thus the two extending members, one on each side of the device, are operated in unison. In the opposite end of the tube 91 are cut the recesses97 adapted to engage the square teeth 98 formed spirally on the tube 99. This tube 99' is enclosed in a suitable housing 100, slidably fitted over the tube 91. By rotation ofthe tube 91, the tube,99 may thus be moved l'on;v

fitting 81 as desired. At the inner end of tube 99 is'fitted the closure member-101 threaded to receive the screw member 102. This member, in turn, is enclosed in the'housing 108 and is fixed at 104 to the'suction member'81;

. Thus, when the end o'f'the tube 91 has passed over. all the threads of the tube 99, the member 99 then starts to rotate. By this rotation,

the threaded member 102 feeds'through the member 101', thus'p'ermitting a'further move ment of the suction member 81; To produce a suitable suction in the member '81 and through-the nozzle '82, a steam discharge nozzle 85, fitting in the pipe 86-is provided. This maybe located in the discharge pipe 105, so as to discharge along the axis of this pipe in a downward, direction. Steam to this nozzle may be supplied through pipe 87controlled by valve 88. The discharge pipe may be fitted to'the L8.4: in any suitable manner. On the other arm'of this'L', fiange'9 5 is fixedto flange 94 as shown. Threaded in i this flange 84 is the innermost telescoping member'83b. Arranged to telescope inside" this member is the second pipe 83a, the outer most pipe 83 bein'gadapted to telescope with this second member in like manner. 9

outermost member 83 is fixed't'o' the'sucti'onmember. 81 as "shown. The various tele'scop-' mg discharge pipesare provided with collars ,InFigure 10, the construction shown'is similar, except th'at'only one operating screw is shown and this is located inside the telescoping discharge pipes. l The suction member 111 provided with nozzle 112 is adapted to extend across the baflle as desired. The operating screw 129 is fitted to the spider 131, which spideris'provided with openings 132 for the passage of ash and the like into the- .t'elescoping' discharge pipe 113. This telescoping pipe 113 fits inside 113a," which in turn, is adapted to telescope'ins'idethe third pipe 113b. This pipe in turn, is fixed to flange 118, which flan e is fixed to flange 122 of the T-fitting'll i. guitable suction is pro du'ced by means of discharge of steam or the like'from thefnozzle 115,'discha-rging downwardly along the axis of the-discharge pipe 117. The operating tube 121 is'provided at, its one extremity with the square threads 126.

adapted to engage the member 127 This,'in turn, is fitted at its end with athreaded clo sure member 128 threadedly engaging the member 129. Thus, by rotation of the tube 121, the suction member 111m'ay be projected and withdrawn'as'desired. Rotation of tube 121 m'ay be conveniently carried out by actut qnz. produc d by he njecto ctio f. 2

St emi t 1: in a y th s table anner s lw ys nera i e a he nozz e f es ctioni memb r E ir he akevi o ie eer his nn ntion, has been descr bed,- es ei gI em o ied boiler turnece eener or. l an g par s i a iler t wi lv e appa ent, wev r, that h nrent nembo a:

' cleaner or y s milar ype 'o appar s,

nd! t to; be 'lle i t re de st o f tha h boilerfurna e Wherev sed. n, the spe fica on. r. cla ms s m e. nstru as ni an nga umeee or a e hive-ea i r p s: ret 'flnidheate Q ny hara r, hile i l e el-1m; qi t furnace cl aner s; o. e

sa strue as nee fxr s a eaner or ny ch anraret sa It s, t be ur her-v nder t a .thetennflbcilen fi nec hereyen sed. is to beconstrued as meaning a;b01 l'er set-V t ng, he mbus ion ham r: c ose by t e be ler. Se t ng, h befi e ti ed for. di termining thefiqw of: the. ga es aroundsthe. b ilenp rtsa Wha We claim as our invention i's: eboiler as qciat diw hefilr acer he comb nation; with, a plur lity. of. boil tube ndjabafile n a edj nlprox mi y e id be 1 di ct ng he falleg ses here b out, f shallow m mb rmountedi die en the loaf-I19 p n said, membe mean ted minisht e Pres ure; Withinaid! m mbe nd; me n dapted. to, ore w rd h aid; p rt, depos ts; n rma ly y ng, at distanc th r from.

ba e, pe n-s i memben 1-- min shthe nre sure ithin e diho w 11 1 bee, me ns. adapted ove ow rd: hey s d, p r epos t q ma a ying. t d anc herefr m, andzmeans the ac ua ng aid lafi r name means n n son; w h; h a r t-- na edzm ens,

n. a b ile soc at d i h: rna e hecom etion' tha baf eof as c i nide c m unteda adj asen thebaflie and; d p d t mWe-mhe fmm.depb its rm d in he cpere ipn o he, fur ace. mea s ad p ed o mere, toward: h a dno iani dev ce. dc:

p sits. ormally ying ate dis an e. h r ea fr andiarcommon meensto on rolr he oplniei o lee heo bin ti ith a efl e. Q hollow member mount d dj-ac en he;

era ibn 1 aid lestrnemeds meensand at said suotion device.

4, Inaboiler associatedwitha furnacegthe om inat on t a pl r lity of b l r tubes and; a baffle,- adjacent: said tubes for directing the i rnaee ge estow rd said tubesand pr vided with a reoess,.of a suction device moun ed in the recess and adapted to-removethere from deposits formed in'the operation of the b oilen and means, ada gted to move tots ardfv the id, r ce s delgp i s no mal y y ng t a distance therefrom.

5, In a boiler associated combination with abafile provided with a recess, of a, suction device mounted in the r ces and adap ed t move, e rom, dieposi s ormed-z the operati n f heiurnaee, meansaclaptedtomove towardthe sai'drecesa; deposits lying, at a distance therefrom and. common means to control, the, operation 0t said last-named means and of: said: suction;

device; 7

6, In a soot extractor for boilers, a; hollow member extending adjacent the pants off the boilcr-tobe cleaned,sai'd member being provided with a. por.t,,means to produceasuctionwithin the said member,, means controlling said suction producing means, means to con trol the opening of the port in said member, and a common, means to control the opera tion of. said suction control means and of said port control means.

7. Ina soot extractor for boi1jers, a sta; tionary hollow member extending adjacent the parts of the boiler to becl'eaned', said member being proyidedwith ports; means to diminish the pressure within: said member, means to control said, pressure diminishingmeans, asecondmember providjedwith a port; adapted to register, with certainofthe ports in said. first-named: member and movableto-v control the registration of said ports and a member movable to Control. the said control means. and, to move said; second. mentioned1 member,

8-. A suction, cleaner adaptedfto. remove from theinterior ofa boiler setting deposits; formed in-the operation of the boiler furnace said cleaner comprising. a hollow member providedwith-ports, means to produce a suc tiononthe interior of, said hollow member by the dischargeof a fluid suchv as steam, means to controltthedischargeofz the suction producing fluid means to; control, the open -l. ingof the portsin saidmember, and aicommon means, for actuating said two controlm an V r 9; Ind a soot extractor-fora, boiler furnace, a suctionmemben associated; with a; portion-v of said boiler-furnace, ablowerelement are ranged discharee a, fluidv u e p essure (W611 the; surface of-said portion of; the; boiler nace and% toward; the, suction member to more. deposits on. the surface ofzthe said; porti n of; the; boiler; furnace toward the wi h a furnace, he.

source to said suction member and to said suction member, a source of fluidunder pressure, and a common means for controllin the flow of fluid under pressure from $211 blower element to simultaneously effect a discharge of fluid from said blower element and create a suction 1n said suction member.

10. In combination, a boiler furnace, a

blower element, a suction device cooperating with said blower element to remove soot from a portion of the boiler furnace, said blower elementbeing arranged to move deposits on the surface of the said portion of the boiler furnace toward the suction member, and a common means for controlling the operation of said blower element and said suction device.

11. In a soot extractor for a boiler furnace, a ported suction member associated with a portion of said boiler furnace, means to control the opening of the ports in said member, a blower element so associated with the said portion of the boiler furnace as to move deposits on the surface thereof toward the ports in the said suction member, and common means for controlling the operation of said suction member, blower element, and port control means.

In testimony whereof I aflix my signature.

WILLIS P. THOMAS. In testimony whereof I aflix my signature.

NORMAN L. SNOW. 

